Sewing-machine.



M. DRUCKERMAN.

SEWING MACHINE.

APPLICATION nun JUNE 25, 1am.

Patented Aug. 25, 1914.

5 BIIEETS-SHEET 1.

nvmrok v BY 7 ma. M

rm/mn THE NORRIS PETERS CO. PHOTOLITHOH WASHINGTON, DT'C.

M. DRUGKERMAN.

SEWING MACHINE.

APPLIUATIOH FILED mums, 1913.

Patented Aug. 25, 1914.

5 SHEETS-SHEET 2.

THE NORRIS PETERS CU. PHOTO-LITHOU WASHINGTON. L]- C Patented Aug. 25, 1914.

TS--SHBBT 3.

IN l/E N T02 THE NORRIS PETERS CO, PHOTO-LITHOH WASHINGTON. D. C.

M. DRUGKERMAN.

SEWING MAGHIHE. APPLICATION FILED 111111126, 1013.

a sums-sum 4.

Patented Aug. 25,

THs'ivoRms PETERS 50.. swam-Limo wasuma mm o. c.

M. DRUGKERMAN.

SEWING MACHINE.

APPLIOATIQN FILED JUNE 25, 1013.

4. m H mm 1% Mm mm \o bow m ox RR M Q Q 1 m m i %N H Q N Wm W mm m; N r s Q M NW sw 3 8 w kw NW N Q L THE NORRIS PETERS CO., PHOTU-LITHO., WASHINGTON. D4 6.

SEWINGeMAGHINE. J

mot er.

To all 107mm it may concern Be it known that I, l\[AX.D11UGKERMAN,

a citizen of the Unitedfitates, and a resi-..

dent oi Brooklyn, in the county of Kings and State of New York, have invented certain. newand :uselul Improvements in Sewing-llfl achines, of which the following is a specification, taken in connection with the accompanying drawings, which form a part of the same.

My invention relatestto sewing machines.

and more particularly to an embroidery sewing machine having a vertically and. laterally movable needle and one adapted to make extremely long stitches, as well as short ones, and any intermediatelength of stitches between the. maximum and uninimum.

. for theordina'ry old clorn'r of zigzag sewing machine is about seven-sixteenths otan inch, the stitch can then begraduatecl down to the minimum, by varying the lateral throw of the needle bar in the manner well rnown in this art. By my invention l increase the maximum length oi'f the stitch to any desired length depending upon the. size of the relative parts of the machine.

With the operating parts of the machine substantially the same size asathat of the ordinary machlne making the maxivention, stitch an inch orone and a quarter inches long, and vary the length oi? the intermediate stitches in any suitable man.- ner so to produce beautiful embroidery effects. This difference inthe; length of the maximum stitches permits my embroidery: machine to QI'Hl'JlOlClQl designs and produce effects which are. wholly novel and which cannot bemade by the ordinary zigzagsewe 1 am aware that there are sewing machines having a vertically and laterally movable needle making a zigzag stitch and I make no claim broadly to such a machine. There are certain structural limitations to Specification of LetterstPatent. 1 PatgnfledaAiug 25;: 1914 Application filed June 25, 1913. Se1'ia1No. 775;66 9L form of sewingmachine.

one illustrative embodiment of my. invention .7 5

plan view of the .sewingimachine, head show inechanismg. Fig. .8 is a fragment/awareneing machine having a. comparatively shortltfi maximunrstitch,, 1. l l y My invention furtherrelates to a novel... take-up mechanism. :whichi v is preferably used with the, otheraparts of my sewing than chine so as to play out a long, portions. emu thread for my machine, thouglrthe .tak up mechanismanight be used withisome other.

My, invention further orelatescto a certain y combination of an accelerator usediin cone-W nection with a rotaryishuttlei so aste .celerate, the. movement ,ofqtheashuttlewat a certain. pointin itsrotation. It further ,relates to certain ,details. of c0111..) struction and combiuationl ofelementsivhich 710 will be mercifully hereinafter a. described in l the specification and, pointed out in the ,1, claims. l

In the accompanying; drawings ,shoWing,

and, in which the samereferenceinumerals, refer to similar parts 1n the; several figures, Figure 1 1s a s1deflelevat1on. of my improved f sewing machine 5., Fig.2, an ,end elevation of the head .and shuttlemechanism; Fig ,3, IS an lnverted plain iew ,otthe. sewingWmachine bed; Fig. l is a detailmertical;section I through a portlonof the sewing ,rmachina bed and showing the rshuttlen needle and... accelerator, in side. BlGVfltlOIM; Bl g 5 .is ya 35 transverse vertical section substantially on a the line 5--.5 of Fig. tlookingiinthedirec tlon of the arrow 1g- 61s itrfllglllflllllflt ing the take-up mechanismg llig. ,7 is an end, elevatlonof the head showmgthe taliejnnp verse vertical section substantially. on, the l line 8-8 of Fig. 1;.Fig. ,9 is atragraentery slde. elevation. of the .headiandishuttle show-s 9 5 ing the needlelbeginning tomake ,a stitch;,.,

Fig. 10 :is a view similarto Fl nt showinga w the parts at .thenext stepdn the making of. the stitchtFig. .11 is a view similar to Figs. 9 and 10 showing the ,next it step wherein, a the LL00 hook of the shuttle hasvcaught the ,needle thread andbeginsto form theuloopv; Figa12 is a View; simil arxto Fig. 11 showing the hook 1 with the. shuttle/ at.isubstantiallye quarterrl revolution from thatshowni in Fig. ,11 and lflb with the take-up mechanismin the 1 at that partiof the-1 stitclu Figs fl, 10, 1] and 12 show substantially.one-eompleteeyela,r

position of the parts in the formation of a stitch; Fig. 13 is a diagrammatic plan view of a fabric embellished with the excessively long stitches, as well as some short stitches, made by my improved embroidery sewing machine; Fig. 14 is a fragmentary plan view of the fabric such as is Fig. 13 showing one of the many forms of embroidery which may be made with the excessively long stitches contrasted or used in connection with the short stitches to obtain the most beautiful effects in embroidery; and Fig.15 is an inverted plan view of the fabric showing the cotiperation of needle thread loops and the substantially straight shuttle thread.

In the illustrative embodiments of my invention shown in the drawings, 1 is a sewing machine having a head 2, a bed 3, a rocking arm 4 provided with a slot 5, in which slides the slide 6 to which is connected a pitman 7, the other end of which is connected with a sleeve 8 within which reciprocates the needle bar 9 carrying the needle 10.

The presser foot bar 11 carries the ordinary presser feet 12, 12 cotiperating with the ordinary feed dogs 13, 13, Fig. 4. The presser foot bar is controlled by the ordinary release lever 14, Fig. 2, cooperating with the arm 15 to lift the presser feet to release the goods. The sewing machine head is also preferably provided with an ordinary tension release lever 16 pivoted at 17 and operated by the screw or pin 18 operating in the slot 19, and, when the presser foot lever 14 is raised, it serves to throw the end 20 of the lever 16 into contact with the ordinary spring tension member 21 and release the tension upon the needle threads 22 in an old and well understood manner.

The head is provided with the ordinary needle'bar shaft 23, Fig. 1, having cranks 24, 24 with which cooperate pitmen 25, 25 connecting the main or needle bar shaft 23 to the main shuttle shaft 26 so that the rotation of the needle bar shaft 23, by applying any suitable power to that shaft, as for example to the pulley 27, will cause the needle bar shaft and the main portion of the shuttle shaft 26 to operate in unison.

The needle bar shaft 23 is provided with the ordinary cam (not shown) to operate the rock arm 4 in the usual and well known manner in this class of machines. On the end of the needle bar shaft 23 I provide a head 28 (Figs. 1 and 8) having a cam slot 29 to cooperate with the main take up 30,

and preferably the same cam slot 006perates with the auxiliary take up 31 which is pivoted 0n the head of the sewing machine at 32 and extends out adjacent to the main take up 30. I connect a pitman 33 to the head 28 in any suitable manner, such as by the pin 34, the other end of the pitman being connected to the collar 35 fast to the needle bar 9. On the head of the machine I pivot a sleeve 36 on the arm 37 by means of the pin 38 so that the sleeve 36, and particularly the needle bar 9 with its needle 10, will swing in the same vertical plane in which the shuttle 39 rotates for a purpose which will be more fully hereinafter pointed out in detail. Below the-bed 3 is mounted in suitable brackets the shuttle I shaft 26, previously noted, which however does not extend to the shuttle, being broken at some intermediate point as for example at 40, Fig. 3. Upon the shaft 26 I mount a gear 41 and upon a countershaft 42 I mount a similar gear 43, the relation of the gears being one to one. Upon the intermediate shuttle shaft 44 I mount the gear wheel 45 having it mesh with a larger gear wheel 46 upon the countershaft 42. The re lation of the gear wheels 45 and 46 is preferably two to one, the shaft 44 being revolved twice to the one revolution of the countershaft 42. Upon the end of the intermediate shuttle shaft 44 I mount an accelerator 49- which at a certain predetermined point of the revolution of the shuttle 39, will accelerate its movement so that the loop made by the needle thread 22 will be quickly thrown past the center 95, Fig. 11 of the shuttle to insure the loop never catching on the shuttle at a point directly beneath its axis of rotation 47; for if this should occur the upward pull on the needle thread would tighten the loop 48 and cause the needle thread to break.

The accelerator 49 Figs. 3 and 4, consists preferably of a disk 50 mounted upon the intermediate shuttle shaft 44 to which is pivoted alink 51 by me'ans'of a pin 52. The other end 55 of this link 51 is pivoted to an arm 53 carried by the accelerator shaft 54. The end 55 of the link 51 will be caused, in an obvious manner, to move to and from the aXis of the rotation of the shuttle shaft 44 so that during that period of rotation'of the shuttle shaft 44 and the end 55 of the link 51 when they are nearest the eriphery of the disk 50, the shaft 54 will be caused momentarily to move with greater speed than its normal rotation. The parts are so arranged that this increased speed of rotation of the shaft 54 occurs just as the needle loop 48 is about to reach a point 95 Fig. 11 directly beneath the axis of rotation 47 of the shuttle 39 so that the rotary movement of the shuttle 39 will be accelerated or speeded up momentarily until the loop 48 passes this critical point in its formation. This acceleration therefore occurs once on each revolution of the shuttle.- The accelerator shaft 54 drives the shuttle 39 in any suitable manner preferably by means of the gear 57, idler 58 and the gear 59 mounted upon the shaft 60. The fork 61 and the cam 62 operating it are in themselves old and coopcrate With the ordinaryformof stitch controller shaft 63.;Thecam or shaft 26 and the fork roclt shaft 66 are of the ordinary construe tion to operate the teed cl0gs13, 18. In my machine they operate the feed dogs once to two revolutions of the shuttle.

One portion of my invention, as pre upon a the fviously noted, is topgreatly increase the ter of which would be the pivot connecting the link with the head Thisis the ordi nary i'orm Well known in the trade. In such machine the needle bar and the needle travel. in the a re of a horis-zontal circle While the hook 6'? of the shuttle 89 rotates vertically at a tangent to that It is, therefore, obviousthat only in a certain portion of that are so formed will the hook ('37 of the shuttle catch the needle loop {t8 formed by the needle thread 22. It is, therefore, impossible to make a comparatively long; stitch With such a machine in which the needle bar, equivalent to the bar 9,

moves in the arc of a circle While the hook 67 moves at a tangent to that are, :tor the reason that the hook would not catch the loops formed by the needle at the ends of the are for the reason that in that position the loop Wouldbe out of the path of the retating hook 6i.

my invention l mount the needle bar 9 in any suitable manner toswingi; in the same Vertical plane in which rotates the shuttle 39. previously explained I accomplish this resoltby mounting the sleeve or guide 36 so that it will swing in a vertical plane over the rotating shuttle 39 and will permit the oscillation of the needle bar 9 in the same vertical plane that the shuttle 39 rotates in. I am therefore enabled to greatly increase the length of the stitch termed by the machine a for the loop, wherever formed, will always be in the path of the hook 67 of the shuttle 39. l llith the parts of the machine the same size as in the oldil'orin in which. the needle bar travels in the arc of a circle at a tangent to tllGSlllllJlZlG, ll can increase the length oi": the stitch from aboiit sevensixteenths, Which is the length of the old stitch to about one inch or 11- inches. Off course, by enlarging; the dif iterent parts of the shuttle mechanism and needle bar operating mechanism the length of thestitch can be proportionately increased.

' (l have obtained excellent results in making mounted upon the the needle bar shot embroidery by making the length oi": the

maximum stitches about one inch long. The

regulated by the controller rod (38, the lever 6th linlci'l), lever 'l'l rock shaft and lover connected to the lint: 7%; by operating-g the controller rod. lit; in any suitable manner either automatically such as shown in my companion application Serial No. 733M130, filed .l lecember ll, will, or by any ordinary knee lever (not she will Omitting for the moment my improved take up device which is used to :leed a large amount of thread to term the successively long stitches, and to permit instant change from a lon to a short stitch or vice versa without atlectinp; the successful feeding of the thread, the operation is as follows: Power being applied in any suitable manner to the pulley 27, preferably from some source of electric or other source oil. power, 23 is rotated which causesthe verticalareciprocation of the ricedle bar ll by the link o3 being connected. to thehead it; and secured to the needle bar by the collar 35, the needle bar reciprocating verticallv freely through the sleeves and 8. lo addition to this rertical reciprocation the needle bar 9 is caused to 11love in a straight line substantially at right angles to the horizontal axis of the shuttle by the pitman ti" and rocking; arm at, which is old in the art and its operation need not be here described in detail except to state that the rocking arm land its operating parts, in tl'iei'nselves, are no portion oi my invention, though a portion of my invention comprises the combination of such rocking arm With other parts of the mecha nism. lit the same time that the needle liar shaft 23 is rotated, the shuttle shaft 26 is operated by the pit neii 535,25 which through the mechanism previously described, transmits power to the eotuitershait 42 (Fig. 25) causing it to revolve at the same speed as the shaft 4:2. The gear Wheels l6 and 4-5 will cause the shuttle 39 to rotate twice as a lateral throw of the needle bar 3 may be i loo fast as the rotation of the needle bar shaft Q3 and the shaft 26. lly this I am enabled to permit a plurality of rotations of the shuttle 39 to one cooperating movement of the needle 10. Preferably this relation is as it have shown in the drawings, which pern'iits two rotations of the shuttle to one cooperating movement of the needle bar 9. I have found in practice that to permit the needle to lay down the thread for my errcessively long stitches that it preferable to permitlhe shuttle 35. With the book 67 to rotate idly Without catching a loop 41:8,

every other rotation. This gives the needle time to form one loop 48 at one end of its travel and the next loop 418 at the other ezo treme end oit' its travelfthe book 67 between these two extreme movements or the needle,

rotating once idly but every other time catching the loop 48 once at the end 7 5 of the slot 76 in the plate 77, Fig. 11, and, on the second revolution of the shuttle 39 from the position shown in Fig. 11 catching the loop d8 when the needle bar 9 and needle 10 have been reciprocated by the rocking arm 4: and connections rrom the extreme end 7 of the slot 76 to the otler extreme end 78 of the same slot. Fig. 11 shows the loop being caught by too hook at one extreme movement of the needle bar 9, it being readily seen that when the needle bar is depressed and forced into the other extreme end 78 of the slot 76, that the hook 67 will then also catch the loop, for the vertical and lateral reciprocation of the needle bar 9 and needle 10 is in the same vertical plane in which rotates the shuttle 37.

In Fig. 9 the hook 6"? of the shuttle is rotating idly without cooperating with a loop. In Fig. 10 the needle is about to enter the cloth which it does in Fig. 11 forming the loop 48 which is then immediately caught by the hook 67 and carried around in the ordinary way until the loop is about to pass the point 95 when the accelerator mechanism, previously described, as well as a portion of the take up mechanism to be later described, will cause the loop to be quickly pulled past this point and clear the hook. The loops d8 so formed cooperate in the ordinary manner with the shuttle or looking thread 56. It will be noted in Figs. 9 to 12 and more particularly in Fig. 15 that while my exceedingly long stitches 79 as well as the loops 80, appearing on the re verse of the fabric 81, take a great length of the needle thread 22 no greater length of shuttle thread 56 is required than on the old form or zig zag embroidery machines, or ror that matter as much, for the reason that in my machine 1 preferably so arrange the parts that the shuttle or looking thread 56 extends substantially in a straight line which not only improves the looks of the reverse of the embroidered fabric 81, but also takes a shorter length of shuttle thread 56 thus saving the time of continually replacing the bobbin or thread holder 82 either with a new bobbin or stopping to fill the old one.

Another portion of my invention is my improved take up mechanism usedalone or in combination with the other elements of my embroidery sewing machine which will feed the relatively large quantity of thread to the needle to make the stitches of maximum length without putting appreciable tension upon the thread, which has been worked into the tabric 81 which would pucker the goods, or in any manner marring the appearance of the embroidery. And further, such a take up mechanism as will automatically adjust itself to feed the thread for the longest stitches as well as for the shortest stitches, or any intermediate length stitches.

I have shown by way of example one embodiment of my take up mechanism, though my invention is not to be limited to this particular form, but on the contrary is limited only by the terms of my claims. This take up mechanism is shown more in detail in Figs. 2, 6, 7, and 9 to 12 inclusive. The needle thread 22 passes through an ordinary guide 83, tension devices 84:, 21 and 85, then through the loop 86 of the coil spring take up 87 mounted on the pin 88, thence through the ordinary take up 30 thence under the rigid guide 90, thence through the auxiliary take up 31 and thence to the needle 10 preferably passing through any form of old rigid guide 92. Upon the auxiliary take up 31 I mount an arm 89 cotiperating with a slot 91 in the plate 93 pivotally mounted upon the pin 88. This plate 93 is provided with an arm 94: to cooperate with the loop 86 of the spring take up 87. When the position of the parts are as shown in Fig. 9 the shuttle 39 is about to make one revolution without havingits hook cooperate with the needle thread. In this position, the auxiliary take up 31 has been'raised to complete the stitch and draw the loop 18 taut on the reverse of the fabric 81 and at the same time raise the plate 91 so that its arm at will free the spring take up loop 86 per mitting it to exert a spring action upon the needle thread 22 to assist in throwing the loop past the center 95, Fig. 11, of the shuttle 39. In this Fig. 9 the needle is about to make another of its maximum stitches, the needle thread 22 having been previously played out by the take-up mechanism. In this position the auxiliary take up 31 is at its extreme raised position while the main take up 30 is in its extreme lower position. On the next movement of the parts the main take up 30 moves vertically at relatively high speed taking with it the needle thread 22 which, however, is caught by the fixed guide 90, this guide lying between the main take up 30 and the auxiliary take up 31. As this main take up passes the fixed guide 90 it pulls the needle thread 22 from the spool and through the tension devices 84, 21 and 85 with considerable speed so as to have sufiicient thread for the next stitch. My maximum stitches are so great that it is necessary to prevent the main take up 30 exerting any strain or pressure upon that portion of the needle thread which is worked into the embroidered article 81. If this were not done the goods 81, as previously noted, would become puckered and ruined or the needle thread would be continually breaking. I, therefore, pacify the needle thread by arranging the auxiliary take 1113.31 so that it will descend slowly While the main take up 30 is a ccnding quickly. This permits the main take up 30 to pull quickly upon the needle thread passing through it so as to quickly obtain sullicient thread for the next stitch andat the same time the fabric Slis protected from being puckeredpor the needle threadfbeingbroiren by theneedle, upon the" upward pull of the main talte up 30, by having the auxiliary take up relieve the strain upon the needle tl'iread when is aliout to be passed through the needle. By this arrangement the quicl; upward movement of the main take up 30 feeds out sufficient thread for the next stitch, the slight pull backward of the needle thread through the auxiliary take up being iuappreciable and not being communicated to the goods. The needle thread is then played out sailicientlyfor the next stitch, Fig. 10, and the main talie up 30 will then begin to descend leaving the needle thread 22 slack as shown in Fig. 11. The needle then enters the fabric ill and forms the next loop 4&8, the shuttle 39 enlarging that loop as shown in Fig. 12. While the shuttle is operating to enlarge the loop 4-8 the main take up 30 descends toward the presser feet so as to remove all tension from the needle thread for such tension would prevent the shut tle successfully making an enlarged loop 48. At the same time the auxiliary take up or pacifier Ell descends carrying With it the plate 93 with its arm 9a which bears on the loop 86 of the spring take up 87 and prevents the spring take up exerting any'tension upon the needle thread 22 during the initial stage of making the loop. The needle then rises, While the shuttle 39 proceeds to enlarge the loop 48, the parts being then substantially in the position shown in Fig. 12. ll hen the loop 48 just passes the point 95, Fig. 11, directly beneath the longitu= dinal axis of the shuttle 39, the auxiliary take up 31 begins to rise which immediately releases the pressure of the arm 9 lupon the loop 86 of the spring take-up 87 so that this spring take up Will instantly exert a pull upon the loop L8 just as it is about to pass the point 95 and Will pull the loop free of the hook 67, so that it Will cooperate with the shuttle thread 56 and form thethread loops 80 on the reverse of the fabric 81, the loops being given a complete and final pull by the auxiliary take up 31. The parts then have made one complete cycle and are in position to have the main take up pull suiiicient thread from the spool for the next stitch, and so on in the manner previously described at length.

In the operation of the take up mechanlsm so far described I have assumed that each stitch is of the maximum length which can be made by the machine. In embroidery, for which this machine is particularly adapted,

it is" necessary -to nequeutly change the length of stitch to obtain the most beautiful effects, either by contrasting thealiaximunr length of stitches 79 with the minimum length of stitches 97 or by gradually tapering the stitchesfronr the maximum to the miii' nun'ltdobtain the desired result. This requires thahthetalre' up mechanism can adjust itself instantly and automatically to the particular length of stitch which may for the moment he used. If after" making one or more stitches of maximum" length it is desired to makeashorter stitch by operating the rl'icle ail-inst in themanner previously described, it obvious that on the firstshort stitclujuinping from the maximum stitch, there Will be a surplus of needle thread which has been previously played out by the main take up 30. This surplus is taken up by the spring take up 87. The spring take up 87, however, immediately permits the maximum stitch to be made antomatically by again moving the rock arm 4, the take up mechanism automatically adjusting itself to the particular length of stitch which may at the moment be made by the machine.

Having thus described this invention in connection With the illustrative embodiments thereof to the details of which I do not de' sire to be limited, What is claimed new and What it is desired to secure by Letters Patent is set forth in the appended claims.

1.. The combination in a sewing machine of a vertically and laterally movable needle, means to operate it both vertically and laterally in a single vertical plane a rotary shuttle, a pivoted main take up, a spring take up, and an independently pivoted auxiliary take up.

2. The combination in a sewing machine of a vertically and laterally movable needle, meansto operate it both vertically and laterally in a single vertical plane, a rotary shuttle, a main take up, a spring take up, an auxiliary take up, and means to render the spring take up inoperative during the initial stages of the formation of the loop.

3. The combination in a serving machine of a vertically and laterally movable needle, means to operate it both vertically and laterally in a single vertical plane, a rotary shuttle, take up mechanism having means to play out a long length of thread for the maximum length of stitches, and resilient means to automatically take up the surplus length of thread when the sewing machine makes a shorter length of stitch than its maximum, and means to render the resilient means inoperative during a portion of the formation of the stitch.

l. The combination in a sewing machine of a vertically and laterally movable needle, means to operate it both vertically and laterally in a single vertical plane, a rotary shuttle a pin upon the head of the machine, a coil spring mounted on the pin and provided with a loop to receive the thread, a main take up, an auxiliary take up, a fixed guide, a plate mounted on the pin and provided with an arm to cooperate with the loopof the coil. spring, and means carried by the auxiliary take up adapted to actuate the plate mounted on the pin.

5. The combination in a sewing machine of a rotary shuttle mountedto rotate in a vertical plane, a needle bar provided with means to permit it to swing in the same Vertical plane that the shuttle rotates in, means to reciprocate the needle bar vertically, a rocking arm, a slide mounted on the rocking arm, a pitman connecting the slide with the needle bar, and means to operate the slide.

6. The combination in a sewing machine of a vertically and laterally movableneedle, means to operate it both vertically and laterally in a single vertical plane, a rotary shuttle, a main take up pivoted on the head of the sewing machine, a spring take up, and an auxiliary take up independently pivoted on the head of the machine.

MAX DRUCKERMAN.

Witnesses:

ALAN M. J oHNsoN, Rosa llZlENKQ Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. 0. 

